Doppler Shift Anisotropy in Small Angle Neutron Scattering

Author

Barbara Ellen Wyslouzil
Gerald Wilemski, Missouri University of Science and TechnologyFollow
Janice L. Cheung
Reinhard Strey
John G. Barker

Abstract

The two-dimensional patterns in our small angle neutron scattering (SANS) experiments from rapidly moving aerosols are anisotropic. To test the kinematic theory of two-body scattering that describes the anisotropy, we conducted SANS experiments using a constant source of D₂O aerosol with droplets moving at ~440 m/s, and varied the neutron velocity from 267 to 800 m/s. The theoretically predicted anisotropy of the laboratory scattering intensities agrees well with the experimental results. Based on an analysis of the scattering intensity in the Guinier region, we also determined the particle velocity. The results are in very good agreement with independent velocity estimates based on supersonic flow measurements.

Recommended Citation

B. E. Wyslouzil et al., "Doppler Shift Anisotropy in Small Angle Neutron Scattering," Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, vol. 60, no. 4 B, pp. 4330 - 4335, American Physical Society (APS), Oct 1999.

The definitive version is available at https://doi.org/10.1103/PhysRevE.60.4330

Department(s)

Physics

Keywords and Phrases

article

International Standard Serial Number (ISSN)

1063-651X

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1999 American Physical Society (APS), All rights reserved.

Publication Date

01 Oct 1999